Improvement in artificial teeth



UNITED STATES PATENT OFFICE.

S. D. ENGLE, OF HAZLETON, PENNSYLVANIA.

IMPROVEMENT IN ARTIFICIAL TEETH.

Specilieation forming part of Letters Patent No. 42,933, dated May 31, lz-.GL

To all whom it may concern:

Be it known that I, s. D. ENGLE, 0f Haznton, in the county of Luzerne and State of Pennsylvania, have invented a new and usei'ul Improvement in Artiicial Dentures; and I do hereby declare that the following is a full, clear, and exact description ofthe same, reference being had to the accompanying` drawing, forming part ot' this specitication, Said drawiu g representing an inverted perspective view of an upper set of teeth, and showing some of the vulcanite to have been removed or omitted to expose the stays or hooks which constitute my invention.

This invention relates to dentures in which tl.e teeth are secured to a metallic plate by means of vuleanite and it consists in the employment of metal stays or hooks soldered to the metallic plate, in combination with pro jecting pins on the teeth and a vulcanite connection, the principal objects being to obviate the warping of the plate, to reduce the work ot' fitting the teeth thereto, and to form a better hold for the vulcanite, and thereby enable t'ze teeth to be more rmly secured thereto.

To enable others skilled in the art to apply my invention to use, I will proceed to describe i: with reference to the drawings.

A is the plate, and B B are the teeth. The teeth are of the kind furnished on their inner sides above the lingual surfaces with pins aa, and now commonly used for vulcanite work. c c are the stays or hooks, which constitute my invention, made of platinum or i other wire and soldered to the plate upon the ridge which conforms to the alveolar ridge ot' the gum. rIhese stays or hooks are so arranged that they come between the pins et t ot the teeth, so that the vulcanite b, surrounding the said stays or hooks and the pins a a, is attached very securely both to the teeth and the plate and secures the teeth firmly to the plate.

The use ofthe stays or hooks o c, soldered to the plate and not to the teeth, obviates the warping ot' the plate, which frequently results when stays are soldered both to the plate and teeth, and also obviates the danger ot' cracking the teeth. It reduces the work of titting the teeth by ohviating the necessity of grinding the teeth to lit the plate. It also prevents mucus and food from getting under the teeth and producing fetor.

The invention is applicable to whole sets or to the fastening of single sections or plain teeth to metallic plates by means of vuleanite.

What I claim as my invention, and desire to secure by Letters Patent, is

The metal stays or hooks c c, soldered to the metallic plate, in combination with the pins a of the teeth, and with the vulcanite for securing the teeth to the plate, all as herein specified.

S. D. ENGLE.

Witnesses W. KIsNER,

JOHN BEtsEL. 

